<template>
  <header class="header">
    <!-- 头部的第一行 -->
    <div class="top">
      <div class="container">
        <div class="loginList">
          <p>尚品汇欢迎您！</p>
          <p v-if="!userName">
            <span>请</span>
            <router-link to="/login">登录</router-link>
            <router-link class="register" to="/register">免费注册</router-link>
          </p>
          <p v-else>
            <a>{{userName}}</a>
            <a class="register" @click="logout">退出登录</a>
          </p>
        </div>
        <div class="typeList">
           <router-link to="/center">我的订单</router-link>
          <router-link to="/shopcart">我的购物车</router-link>
          <a href="###">我的尚品汇</a>
          <a href="###">尚品汇会员</a>
          <a href="###">企业采购</a>
          <a href="###">关注尚品汇</a>
          <a href="###">合作招商</a>
          <a href="###">商家后台</a>
        </div>
      </div>
    </div>
    <!--头部第二行 搜索区域-->
    <div class="bottom">
      <h1 class="logoArea">
        <router-link to="/home" class="logo">
          <img src="./images/logo.png" alt="">
        </router-link>
      </h1>
      <div class="searchArea">
        <form action="###" class="searchForm">
          <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" />
          <button class="sui-btn btn-xlarge btn-danger" type="button" @click="goSeater">搜索</button>
        </form>
      </div>
    </div>
  </header>
</template>

<script>
export default {
  name: "Header",
  data() {
    return {
      keyword: ''
    }
  },
  methods: {
    // 搜索按钮的回调函数，需要向 search 路由进行跳转
    goSeater() {
      // 路由传递参数
      // 对象形式（常用）
      // 如果有query参数也要传递
      if(this.$route.query) {
        let loction = { name: "search", params:{ keyword:this.keyword || undefined }}
        loction.query = this.$route.query
        this.$router.push(loction)
      }
    },
    // 退出登录
    async logout() {
      try {
        // 如果成功
        await this.$store.dispatch('userLogout')
        // 路由回到home首页
        this.$router.push('/home')
      }catch (error){
        alert(error.message)
      }
      
      
    }  
  },
  mounted() {
    // 通过全局事件总线清除关键字
    this.$bus.$on('clear', () => {
      this.keyword =''
    })
  },
  computed: {
    // 用户名信息
    userName() {
      try {
        // 页面初始时没有userInfo.name的值
        return this.$store.state.user.userInfo.name
      } catch {
        return ''
      }
      
    }
  }
}
</script>

<style lang="less" scoped>
  .header {
    &>.top {
      background-color: #eaeaea;
      height: 30px;
      line-height: 30px;
      .container {
        width: 1200px;
        margin: 0 auto;
        overflow: hidden;
        .loginList {
          float: left;
          p {
            float: left;
            margin-right: 10px;
            .register {
              border-left: 1px solid #b3aeae;
              padding: 0 5px;
              margin-left: 5px;
            }
          }
        }
        .typeList {
          float: right;
          a {
            padding: 0 10px;
            &+a {
                border-left: 1px solid #b3aeae;
            }
          }
        }
      }
    }
    &>.bottom {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;
      .logoArea {
        float: left;
        .logo {
          img {
            width: 175px;
            margin: 25px 45px;
          }
        }
      }
      .searchArea {
        float: right;
        margin-top: 35px;
        .searchForm {
          overflow: hidden;
          input {
            box-sizing: border-box;
            width: 490px;
            height: 32px;
            padding: 0px 4px;
            border: 2px solid #ea4a36;
            float: left;
            &:focus {
              outline: none;
            }
          }
          button {
            height: 32px;
            width: 68px;
            background-color: #ea4a36;
            border: none;
            color: #fff;
            float: left;
            cursor: pointer;
            &:focus {
              outline: none;
            }
          }
        }
      }
    }
  }
</style>